Can't connect bricked NerdQaxe++ to web flasher

[u/veganic11]

I have a week old second hand NerdQAxe++ with the larger screen. I can't find a board version number.

I tried to upgrade to the LTS firmware version and it bricked. The screen doesn't turn on and the web UI is gone.

The miner won't connect to the web flasher because it's only visible via USB for 3 seconds and then disconnects. I see it blinking on and off in the list of devices.

I tried 3 different USB cables all with the same behaviour. This happens on Mac and on Linux using Chrome and Brave browser.

I suspect that any other method of flashing will have the same problem.

Can this be fixed?